杞憂

1. Origins, structure, and basic meaning

• Structure: 杞憂 is read as きゆう and can mean “groundless fear” or “needless worry”, depending on context.
• Basic usage: The examples show rain worries proving groundless and needless concern about insufficient tools.

2. Common pitfalls and similar expressions

• Distinguishing senses and uses
  • It is worry about something that does not materialize; 杞憂に終わる means the concern proved unfounded.